import { describe, it, expect, beforeAll, beforeEach } from 'vitest';
import { RatingTestContext } from './RatingTestContext';
import { CalculateConsistencyUseCase } from '../../../../core/rating/application/use-cases/CalculateConsistencyUseCase';
import { GetConsistencyScoreUseCase } from '../../../../core/rating/application/use-cases/GetConsistencyScoreUseCase';
import { GetConsistencyTrendUseCase } from '../../../../core/rating/application/use-cases/GetConsistencyTrendUseCase';
import { Driver } from '../../../../core/racing/domain/entities/Driver';
import { Race } from '../../../../core/racing/domain/entities/Race';
import { League } from '../../../../core/racing/domain/entities/League';
import { Result as RaceResult } from '../../../../core/racing/domain/entities/result/Result';

describe('Rating Consistency Use Cases', () => {
  let context: RatingTestContext;
  let calculateConsistencyUseCase: CalculateConsistencyUseCase;
  let getConsistencyScoreUseCase: GetConsistencyScoreUseCase;
  let getConsistencyTrendUseCase: GetConsistencyTrendUseCase;

  beforeAll(() => {
    context = RatingTestContext.create();
    calculateConsistencyUseCase = new CalculateConsistencyUseCase(
      context.driverRepository,
      context.raceRepository,
      context.resultRepository,
      context.eventPublisher
    );
    getConsistencyScoreUseCase = new GetConsistencyScoreUseCase(
      context.driverRepository,
      context.resultRepository
    );
    getConsistencyTrendUseCase = new GetConsistencyTrendUseCase(
      context.driverRepository,
      context.resultRepository
    );
  });

  beforeEach(async () => {
    await context.clear();
  });

  describe('CalculateConsistencyUseCase', () => {
    describe('UseCase - Success Path', () => {
      it('should calculate consistency for driver with consistent results', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Multiple completed races with consistent results
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        for (let i = 1; i <= 5; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: 5,
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 10,
            incidents: 1,
            startPosition: 5
          });
          await context.resultRepository.create(result);
        }

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r5'
        });

        // Then: The consistency should be calculated
        expect(result.isOk()).toBe(true);
        const consistency = result.unwrap();
        expect(consistency.driverId.toString()).toBe(driverId);
        expect(consistency.consistencyScore).toBeGreaterThan(0);
        expect(consistency.consistencyScore).toBeGreaterThan(50);
        expect(consistency.raceCount).toBe(5);
        expect(consistency.positionVariance).toBeGreaterThan(0);
        expect(consistency.positionVariance).toBeLessThan(10);
      });

      it('should calculate consistency for driver with varying results', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Multiple completed races with varying results
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        const positions = [1, 10, 3, 15, 5];
        for (let i = 1; i <= 5; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: positions[i - 1],
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 25 - (positions[i - 1] * 2),
            incidents: 1,
            startPosition: positions[i - 1]
          });
          await context.resultRepository.create(result);
        }

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r5'
        });

        // Then: The consistency should be calculated
        expect(result.isOk()).toBe(true);
        const consistency = result.unwrap();
        expect(consistency.driverId.toString()).toBe(driverId);
        expect(consistency.consistencyScore).toBeGreaterThan(0);
        expect(consistency.consistencyScore).toBeLessThan(50);
        expect(consistency.raceCount).toBe(5);
        expect(consistency.positionVariance).toBeGreaterThan(10);
      });

      it('should calculate consistency with minimum race count', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Minimum races for consistency calculation
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        for (let i = 1; i <= 3; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: 5,
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 10,
            incidents: 1,
            startPosition: 5
          });
          await context.resultRepository.create(result);
        }

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r3'
        });

        // Then: The consistency should be calculated
        expect(result.isOk()).toBe(true);
        const consistency = result.unwrap();
        expect(consistency.driverId.toString()).toBe(driverId);
        expect(consistency.consistencyScore).toBeGreaterThan(0);
        expect(consistency.raceCount).toBe(3);
      });
    });

    describe('UseCase - Edge Cases', () => {
      it('should handle driver with insufficient races', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Only one race
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        const raceId = 'r1';
        const race = Race.create({
          id: raceId,
          leagueId,
          scheduledAt: new Date(Date.now() - 86400000),
          track: 'Spa',
          car: 'GT3',
          status: 'completed'
        });
        await context.raceRepository.create(race);

        const result = RaceResult.create({
          id: 'res1',
          raceId,
          driverId,
          position: 5,
          lapsCompleted: 20,
          totalTime: 3600,
          fastestLap: 105,
          points: 10,
          incidents: 1,
          startPosition: 5
        });
        await context.resultRepository.create(result);

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r1'
        });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });

      it('should handle driver with no races', async () => {
        // Given: A driver with no races
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r1'
        });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });
    });

    describe('UseCase - Error Handling', () => {
      it('should handle missing driver', async () => {
        // Given: A non-existent driver
        const driverId = 'd999';

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r1'
        });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });

      it('should handle missing race', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // When: CalculateConsistencyUseCase.execute() is called
        const result = await calculateConsistencyUseCase.execute({
          driverId,
          raceId: 'r999'
        });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });
    });
  });

  describe('GetConsistencyScoreUseCase', () => {
    describe('UseCase - Success Path', () => {
      it('should retrieve consistency score for driver', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Multiple completed races
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        for (let i = 1; i <= 5; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: 5,
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 10,
            incidents: 1,
            startPosition: 5
          });
          await context.resultRepository.create(result);
        }

        // When: GetConsistencyScoreUseCase.execute() is called
        const result = await getConsistencyScoreUseCase.execute({ driverId });

        // Then: The consistency score should be retrieved
        expect(result.isOk()).toBe(true);
        const consistency = result.unwrap();
        expect(consistency.driverId.toString()).toBe(driverId);
        expect(consistency.consistencyScore).toBeGreaterThan(0);
        expect(consistency.raceCount).toBe(5);
        expect(consistency.positionVariance).toBeGreaterThan(0);
      });

      it('should retrieve consistency score with race limit', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Multiple completed races
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        for (let i = 1; i <= 10; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: 5,
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 10,
            incidents: 1,
            startPosition: 5
          });
          await context.resultRepository.create(result);
        }

        // When: GetConsistencyScoreUseCase.execute() is called with limit
        const result = await getConsistencyScoreUseCase.execute({ driverId, limit: 5 });

        // Then: The consistency score should be retrieved with limit
        expect(result.isOk()).toBe(true);
        const consistency = result.unwrap();
        expect(consistency.driverId.toString()).toBe(driverId);
        expect(consistency.raceCount).toBe(5);
      });
    });

    describe('UseCase - Error Handling', () => {
      it('should handle missing driver', async () => {
        // Given: A non-existent driver
        const driverId = 'd999';

        // When: GetConsistencyScoreUseCase.execute() is called
        const result = await getConsistencyScoreUseCase.execute({ driverId });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });

      it('should handle driver with insufficient races', async () => {
        // Given: A driver with only one race
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        const raceId = 'r1';
        const race = Race.create({
          id: raceId,
          leagueId,
          scheduledAt: new Date(Date.now() - 86400000),
          track: 'Spa',
          car: 'GT3',
          status: 'completed'
        });
        await context.raceRepository.create(race);

        const result = RaceResult.create({
          id: 'res1',
          raceId,
          driverId,
          position: 5,
          lapsCompleted: 20,
          totalTime: 3600,
          fastestLap: 105,
          points: 10,
          incidents: 1,
          startPosition: 5
        });
        await context.resultRepository.create(result);

        // When: GetConsistencyScoreUseCase.execute() is called
        const result = await getConsistencyScoreUseCase.execute({ driverId });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });
    });
  });

  describe('GetConsistencyTrendUseCase', () => {
    describe('UseCase - Success Path', () => {
      it('should retrieve consistency trend for driver', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Multiple completed races
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        for (let i = 1; i <= 5; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: 5,
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 10,
            incidents: 1,
            startPosition: 5
          });
          await context.resultRepository.create(result);
        }

        // When: GetConsistencyTrendUseCase.execute() is called
        const result = await getConsistencyTrendUseCase.execute({ driverId });

        // Then: The consistency trend should be retrieved
        expect(result.isOk()).toBe(true);
        const trend = result.unwrap();
        expect(trend.driverId.toString()).toBe(driverId);
        expect(trend.trend).toBeDefined();
        expect(trend.trend.length).toBeGreaterThan(0);
        expect(trend.averageConsistency).toBeGreaterThan(0);
        expect(trend.improvement).toBeDefined();
      });

      it('should retrieve consistency trend over specific period', async () => {
        // Given: A driver
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        // Given: Multiple completed races
        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        for (let i = 1; i <= 10; i++) {
          const raceId = `r${i}`;
          const race = Race.create({
            id: raceId,
            leagueId,
            scheduledAt: new Date(Date.now() - (i * 86400000)),
            track: 'Spa',
            car: 'GT3',
            status: 'completed'
          });
          await context.raceRepository.create(race);

          const result = RaceResult.create({
            id: `res${i}`,
            raceId,
            driverId,
            position: 5,
            lapsCompleted: 20,
            totalTime: 3600,
            fastestLap: 105,
            points: 10,
            incidents: 1,
            startPosition: 5
          });
          await context.resultRepository.create(result);
        }

        // When: GetConsistencyTrendUseCase.execute() is called with period
        const result = await getConsistencyTrendUseCase.execute({ driverId, period: 7 });

        // Then: The consistency trend should be retrieved for the period
        expect(result.isOk()).toBe(true);
        const trend = result.unwrap();
        expect(trend.driverId.toString()).toBe(driverId);
        expect(trend.trend.length).toBeLessThanOrEqual(7);
      });
    });

    describe('UseCase - Error Handling', () => {
      it('should handle missing driver', async () => {
        // Given: A non-existent driver
        const driverId = 'd999';

        // When: GetConsistencyTrendUseCase.execute() is called
        const result = await getConsistencyTrendUseCase.execute({ driverId });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });

      it('should handle driver with insufficient races', async () => {
        // Given: A driver with only one race
        const driverId = 'd1';
        const driver = Driver.create({ id: driverId, iracingId: '100', name: 'John Doe', country: 'US' });
        await context.driverRepository.create(driver);

        const leagueId = 'l1';
        const league = League.create({ id: leagueId, name: 'Pro League', description: 'Desc', ownerId: 'o1' });
        await context.leagueRepository.create(league);

        const raceId = 'r1';
        const race = Race.create({
          id: raceId,
          leagueId,
          scheduledAt: new Date(Date.now() - 86400000),
          track: 'Spa',
          car: 'GT3',
          status: 'completed'
        });
        await context.raceRepository.create(race);

        const result = RaceResult.create({
          id: 'res1',
          raceId,
          driverId,
          position: 5,
          lapsCompleted: 20,
          totalTime: 3600,
          fastestLap: 105,
          points: 10,
          incidents: 1,
          startPosition: 5
        });
        await context.resultRepository.create(result);

        // When: GetConsistencyTrendUseCase.execute() is called
        const result = await getConsistencyTrendUseCase.execute({ driverId });

        // Then: The result should be an error
        expect(result.isErr()).toBe(true);
      });
    });
  });
});